/*
 * Copyright (c) 2014-2022 Monix Contributors.
 * See the project homepage at: https://monix.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package monix.reactive.internal.operators

import monix.execution.Ack.Continue
import monix.execution.Scheduler
import monix.reactive.Observable.Operator
import monix.reactive.observers.Subscriber

private[reactive] object FailedOperator extends Operator[Any, Throwable] {
  def apply(out: Subscriber[Throwable]): Subscriber[Any] =
    new Subscriber.Sync[Any] {
      implicit val scheduler: Scheduler = out.scheduler
      def onNext(elem: Any) = Continue
      def onComplete(): Unit = out.onComplete()
      def onError(ex: Throwable): Unit = {
        out.onNext(ex)
        out.onComplete()
      }
    }
}
